Don't draw if text at given index isn't defined
Add USHolidays.ics to bokeh.sampledata
Install icalendar from pip on travi-ci
Add glyphs/calendars example (a categorical plot)
Apply better styling to glyphs/calendars
Add *.ics to sampledata_suffixes in setup.py
Don't be so restrictive when checking text indices
Add icalendar to bokeh's conda recipe
Add support for American-style calendar (week starts on Sunday)
Merge pull request #1451 from bokeh/mattpap/calendar

Add glyphs/calendars example